ALEXANDRIA, Va., Jan. 20 -- United States Patent no. 12,528,525, issued on Jan. 20, was assigned to Siemens Mobility GmbH (Munich).
"Method for monitoring a danger area and monitoring device" was invented by Jens Braband (Braunschweig, Germany).
According to the abstract* released by the U.S. Patent & Trademark Office: "A method for monitoring a danger area of a railway installation. At least one radio module is arranged in, or in the vicinity of, the danger area. Radio signals are transmitted by the radio module and the radio signals are received and evaluated. A pattern of the received radio signals in a basic state of the danger area is determined and when the radio signals are evaluated, differences from the pattern in the basic state...